He mentioned the keyboard shortcut bindings for selecting verbs in a point and click adventure game, and various approaches were suggested, with more suggestions coming in the comment section.

A couple of thought came together in my mind, so I made a quick prototype.

Instead of having 'P' for push, and 'L' for look - and instead of just having a grid block of keys on the keyboard relate to the grid of verbs, there might be a more intuitive way.

If you use just WASD or the arrow keys, but by holding down the keys you select the verb in that cardinal direction, you only need 4 keys, and you don't have to hunt your way around a 9 character grid or search across the keyboard to work out whether you're pressing 'D' or not.